We have searched for the C-violating decay eta --> gammagammagamma in a sample of similar to 18 million eta mesons produced in phi --> etagamma decays, collected with the KLOE detector at the Frascati phi-factory DAPhiNE. No signal is observed and we obtain the upper limit BR(eta --> gammagammagamma) less than or equal to 1.6 x 10(-5) at 90% CL.
Upper limit on the eta -> gamma gamma gamma branching ratio with the KLOE detector
GORINI, Edoardo;PRIMAVERA, Margherita;VENTURA, Andrea;
2004-01-01
Abstract
We have searched for the C-violating decay eta --> gammagammagamma in a sample of similar to 18 million eta mesons produced in phi --> etagamma decays, collected with the KLOE detector at the Frascati phi-factory DAPhiNE. No signal is observed and we obtain the upper limit BR(eta --> gammagammagamma) less than or equal to 1.6 x 10(-5) at 90% CL.File in questo prodotto:
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